Why the study?
Does radiofrequency catheter ablation at the entrance site of the slow conduction zone eliminate tachycardia in a patient with verapamil-sensitive idiopathic left ventricular tachycardia?
Does radiofrequency catheter ablation at the entrance site of the slow conduction zone eliminate tachycardia in a patient with verapamil-sensitive idiopathic left ventricular tachycardia?
Radiofrequency catheter ablation at the entrance site of the slow conduction zone successfully eliminated verapamil-sensitive idiopathic left ventricular tachycardia, supporting macroreentry in the Purkinje system as the underlying mechanism.
Supports macroreentry in the Purkinje system for verapamil-sensitive ILVT; hypothesis-generating and leaves generalizability open.
The entrance site of the slow conduction zone was identified by entrainment study in an 18 year-old woman with verapamil-sensitive idiopathic left ventricular tachycardia. Radiofrequency catheter ablation at this site eliminated the tachycardia. The entrance site was at a mid-septal location and was more than 2 cm away from the exit site. Electrophysiologic findings suggested macroreentry in the Purkinje system as the mechanism of idiopathic left ventricular tachycardia.
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Lai et al. (1998) studied this question.
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